Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

41-290 Help
#1

Hi All,
This is my first post here, so be gentle Icon_smile
It's been a while since I've done any electronic restorations. A friend of mine picked up a 41-290, and I offered to help with the electronics. I've re-capped it, and replaced all of the rubber wire in it, including the wiring to the loudspeaker/field coil (which was frayed and shorting where it goes through the chassis). I currently have audio going all the way to the input of both 41 tubes, but nothing coming out of either.
I am not sure where to look. The schematics I have at my disposal are incomplete at best. If anyone has any ideas where to look next, they'd be greatly appreciated! Also, does anyone know what the voltages at the 41's are supposed to be?


Messages In This Thread
41-290 Help - by KC2YSR - 04-01-2016, 08:13 AM
RE: 41-290 Help - by klondike98 - 04-01-2016, 11:28 AM
RE: 41-290 Help - by KC2YSR - 04-01-2016, 11:36 AM
RE: 41-290 Help - by KCMike - 04-01-2016, 11:53 AM
RE: 41-290 Help - by KC2YSR - 05-27-2016, 08:36 AM
RE: 41-290 Help - by morzh - 05-27-2016, 08:54 AM
RE: 41-290 Help - by KC2YSR - 05-27-2016, 08:57 AM
RE: 41-290 Help - by Radioroslyn - 05-27-2016, 08:57 AM
RE: 41-290 Help - by morzh - 05-27-2016, 09:03 AM
RE: 41-290 Help - by Radioroslyn - 05-27-2016, 09:13 AM
RE: 41-290 Help - by KC2YSR - 05-27-2016, 09:29 AM
RE: 41-290 Help - by morzh - 05-27-2016, 09:44 AM
RE: 41-290 Help - by KC2YSR - 05-27-2016, 10:07 AM
RE: 41-290 Help - by Radioroslyn - 05-27-2016, 10:30 AM
RE: 41-290 Help - by morzh - 05-27-2016, 11:08 AM
RE: 41-290 Help - by PAradiogeek - 05-27-2016, 11:22 AM
RE: 41-290 Help - by morzh - 05-27-2016, 11:38 AM
RE: 41-290 Help - by Radioroslyn - 05-27-2016, 11:39 AM



Users browsing this thread: 3 Guest(s)
[-]
Recent Posts
Philco 38-7 Speaker
Just to make sure, you chose either 4 ohm into 5K or into 10K? (blk-org or blk-grn)morzh — 06:23 PM
Philco 38-7 Speaker
I have let this one sit because of other duties. Now I am back, and I have a couple of questions. I hooked up a Hammond ...tludka — 05:34 PM
Philco 42-390, code 121 speaker
>>A closer examination of the very small print schematic indicates that the speaker is a PM type. This shows a ...morzh — 05:18 PM
Philco 60 Squealing
Litz is typically tinned by simply rubbing it with the soldering iron tip while immersed in solder (and a bit of rosin f...morzh — 05:14 PM
Philco 6K7
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND. I am not ...morzh — 05:10 PM
Philco 16B Parts
Thanks for the reply. Unfortunately the radio was removed before bidding was over so I didn't get a chance to bid.dconant — 04:10 PM
Philco 16B Parts
Hi Dan, Mike is correct, there's a lot of painted stuff on the chassis but it looks pretty good. The sm is all there,sp...Radioroslyn — 03:50 PM
1930s Stromberg-Carlson Tombstone Radio need help identifying model number
Hi Cap'n Clock, Unfortunately, I do not have this radio.  This is a shame because this should be a good performer.  2A...captainclock1988 — 03:43 PM
Philco 42-390, code 121 speaker
Using a 5W  1.5k  ceramic resistor in place of the field coil and using a 4 ohm PM speaker, I was able to bring the radi...Stevelog — 02:57 PM
Philco 60 Squealing
I have taken out the 2nd IF and found a problem or not. I believe the coils are litz wire. There is a very small strand ...dconant — 02:13 PM

[-]
Who's Online
There are currently 4826 online users. [Complete List]
» 3 Member(s) | 4823 Guest(s)
AvatarAvatarAvatar

>